Paper-ctttter for office use



G. HOMRIG.

PAPERCUTTER'FOR OFFICE USE.

- APPLICATION FILED JUNE 2311919- 1 322,571

.Patented Nov. 25, 1919.

2 SHEETS-SHEET I.

IIVVEIVTOR ATTORNEY G. HOMRIG.

PAPER CUT-YER FOR OFFICE USE.

APPLICATION FILED JUNE 23. 1919.

Patented Nov. 25, 1919.

2 SHEETS-SHEET 2.

676 ATTORNEY GEORGE HOMRIG, OF DENVER, COLORADO.

PAPER-CUTTER FOR OFFICE USE.

To all whom it may concern:

Be it known that I, GEORGE HOMRIG, a citizen of the United States of America, residing at the city and county of Denver and State of Colorado, have invented new and useful Paper- Cutters for ()flice Use, of which the following is a specification.

This invention relates to improvements in paper cutters, and more particularly to cutters which are adapted for offices or for rivate use.

The object of the invention is to provide a paper cutter which is both light and port able, which can be manufactured at relatively slight cost, and which is adapted to be placed on an ordinary desk or table. Further to provide a paper cutter comprising a frame having a knife, operating lever and paper clamp-operating lever mounted on a common bolt, the knife being horlzontally disposed and adapted to give a shearing cut, the said frame having a graduated bed plate, provided with an ad ustable paper back or guide.

These objects are accomplished by the mechanism illustrated in the accompanying drawings in which:

Figure 1, is a perspective view of the imroved paper cutter.

Fig. 2, is a side view of the same, the

. removable side plate and paper clamp supported thereby, being omitted to show the knife and its operating lever.

Fig. 3, is a central, transverse, vertical sectional view, looking in the opposite direction to Fig. 2, and showing the removable side plate, the paper clamp mounted therein, and its operating lever.

Fig. a is a horizontal sectional view on the line of the pivot bolt which supports the operating levers, the two-part papersupporting bed being broken away to afford clearer illustration.

Fig. 5, is a sectional view through the base, on the line 5 5 of Fig. 4

Fig. 6, is a perspective view of there movable side plate, showing the guideway in the same for the clamp.

Fig. 7 is a perspective view of the clamp.

Fig. 8, is detail side view, showing a modificatlon in the manner of lifting the paper clamp, and l Fig. 9, is a perspectlve new of a portlon of the knife supporting'bar and its knife.

In most oflices, particularly those requiring a large clerical force, there is a great Specification of Letters Patent.

Patented Nov. 25, 1919.

Application filed June 23, 1919. Serial No. 306,045.

waste of letter paper, due to mistakes in caption and other causes, and to correct such mistakes would be impracticable owing to the time required, and the appearance of the sheet after correction. As a consequence, such partially written sheets are thrown away, thereby occasioning a great loss of paper, much of which could be cut to a smaller size and used for other than general correspondence purposes.

The paper cutter hereinafter described, is deslgned to prevent this waste, as no skill is required in its operation, and it is of such form and size that it can be placed on an ordinary desk or table.

Referring to the accompanying drawings:

The numeral 1, indicates the horizontal base bar of the frame of the cutter; 2, the vertical end members; and 3, one of the side plates; the parts 1, 2 and 3, preferably forming an integral structure.

The other side member 4, is spaced from but secured to the member 3, by screws or bolts 5. On the inner face .of the fixed plate 3, and at one end thereof, are a pair of spaced guide strips 6 and 7, which are inclined at an angle of forty-five degrees,

grees' The inclined edge of the block 8,

and the inclined strips 6 and 7, form slideways for aknife bar 9, one end of which is inclined to correspond to the inclined edge of the block 8, upon which it slides, while the other end is inclined to correspond to the inclination of the strip 6, against which it bears, and is also provided with an inclined groove 10, in which the strip '7 lies. The strip 7 is about half the thickness of the strip 6, as shown by Fig. 4;, and the groove 10, in the knife bar is of the same depth as the thickness of the strip 7 and this permits one face of the bar to bear against the fixed plate 3, and the other face to bear against the removable plate 4, as shown in Fig. 4-, by which lateral movement of the knife bar 9, is prevented.

A suitable knife 11, is secured to the bar 9, and the upper edge of the bar is recessed, as shown at 12, and the edge of this recess is formed with a projecting lug 13, which is adapted. to enter a substantially semicircular recess 14, in the under edge of an operating lever 15, which is pivotallymounted in a bolt 16,which extends through the 10 of the knife bar.

plates 3 and 4. This bolt extends through the inner end portion of the lever, above the recess 14, and when the lever is raised, the lug 13 is engaged by one side of the recess 14, and the knife bar is given a combined vertical and lateral 'movementpthe lateral movement being caused by the inclined guide strip 7, which fits in the groove The block 8, and the strip 6,-steady the movement of the knife bar, and keepthe same 'on a horizontal plane.

A heel 17 is formed on the under edge of the lever 15, adjoining the recess 14; and when the lever is lowered, the face of the recess 14, engages the lug 13, to move the knife bar down, and as it nears the limit of its downward movement the heel 17, engages a portion 18 of the upper edge of the knife bar, adjoining the lug 13, and exerts a forcible downward pressure on the bar which causes the knife to cut through the paper. The downward movement of the knife bar, is also a combined vertical and lateral movement, which imparts a shearing cut to the knife, as Will be understood.

Cooperating with the knife, is a paper clamp 19, which is supported and operated in the following manner: The removable plate 4, which is clearly shown 1n F1gs. l and 6-, is formed with a recess 20, on its inner face which is of'a depth of half the thickness of the plate, and of the same length as the clamp 19. The clamp is slidably"mounted' inthis recess, and its thickness is the same as the depth of the recess, so that the clamp is flush with the inner face of the plate 4. On this side of the clamp next the'plate 4, is formed a vertical tongue 21, which lies in a recess 22 in the said plate. This tongue lies along one side ofea recess 23, which is cut intothe clamp from its upper edge, the bottom edge of this recess being on a horizontal plane. One end of a clamp-operatlng lever 24, is mounted on the bolt 16, and this end of the lever is formed with a cam portion 25, which bears against the horizontal edge of the recess23, and this low portion has a circular pro ection or lug 26, which enters a segmental slot 27, in the tongue 21. The curvature of this slot is such as to permit the lug 26. to swing in an arc whose center is the bolt 16, as the clamp'moves up and down. The clamp is lifted by the engagement ofthe lug 26 Withthe inner edge of the slot 27, as the lever 24 is'raised, the cam 25 being always in engagement with the edge of the recess 23, and when the said lever is lowered, the cam 25, forces the clamp down upon the sheets of paper to be cut, and the lever is thus held with one hand, while the knifeoperating lever is operated with the other hand. 'In Fig. 8, is illustrated a modification in the manner of operating the clamp. In this modification, the cam portion 25, of the lever, is formed on one side with a finger 28, whichextends beyond the edgeof the cam, and terminates in a right angled lip 29, wh1ch engages'the curved edge of a PIOJGClZlOll 30 on the clamp. The lipf29,and

curved projectiony30, accomplish the same I result as the lug 26 and the segmental slot and constructed in the following manner:

Upon the base bar 1, of the frame, are secured two wooden bars or strips 31, at right angles to the plates 3 and 4, and upon the bar 1, and parallel with the same is secured a Wooden bar 32, the under side of the end portions of which are cut away to rest upon the bars31, as will be understood by reference to Fig. 3, the bar 32, being adapted to receive the cutting edge of the knife. The under'edges of the side plates 3 and 4, are recessed for a suitable depth, to permit the stacked paper to pass beneath them, and the bars 31, rest respectively against the opposite edges of these recesses, as clearly shown in Fig. 3. A two-part base is supported on the bars 31, the parts 33 being duplicates. These base members are'screwed to thebars 31, and their inner ends abut against the bar 32, as will be seen by reference to Figs. 1 and 5. Theface of each member33 is graduated by lines which are spaced an inch apart, to enable one to. cut paper any desired length, and dove tail grooves 34 are formed in the face of each member, in

either of which, is slidably mounted a split 7 lug 35, which is formed upon or secured to, a paper back or guide 36, which is movable toward or away from the knife, and is locked in any desired position by alever 37 which is pivotally mounted in the upper end ofthe split lug 35, the lower end of said lever terminating in a wedge, which when forced between the halves of the split lug, causes them to bind or frictionally engage the sides of the groove, and thus hold the.

guide 36, at the desired point. 1

The base plates are providedwith shalunder edges of. the levers, when the same are raised, and thus-prevent the'levers from dropping down.

Having described my invention, What I claim as new and desire to secure by Letters Patent is:

1. In a paper cutter, a frame, a knife knife, a paper clamp and a lever also mount-' ed on the said bolt for operating said clamp.

2. In a paper cutter, a frame having inclined slideways, a knife supported on said slideways, a paper clamp slidably mounted in the frame, levers for operating said knife and clamp, and a common bolt upon which said levers are pivotally mounted.

3. In a paper cutter, a frame having inclined slideways, a bar supported on the inclined slideways, having a knife thereon, a pivot bolt secured inthe frame, a lever mounted on said bolt having a portion engaging said knife bar to raise and lower the same, a paper clamp slidably mounted in the frame, and a lever also mounted on the pivot bolt and in engagement with the said clamp to raise and lower the same.

4. In a paper cutter, a frame comprising a base, a fixed side plate, and a removable side plate, inclined slideways on one of the side plates, a knife bar mounted on said slideways having a knife thereon, a pivot bolt extending through said plates, a lever mounted on said bolt and engaging said bar so as to raise and lower the same, a paper clamp slidably mounted in the other side plate, and a lever also mounted on the said bolt, and engaging said clamp so as to raise and lower the same.

5. In a paper cutter, a frame comprising a base and side plates one of which is removable, inclined slideways on one of said side plates, a knife-holding bar having an inclined end adapted to ride on one of said slideways, and an inclined groove adapted to receive the other of said slideways, a lever for raising and lowering said knife-holding bar, a paper clamp slidably mounted in the other side plate, a lever for raising and lowering said clamp, and a common pivot bolt for said levers which extends through said side plates.

6. In a paper cutter, a frame comprising a base, and spaced side plates, one of which is removable, a pair.of inclined slide way strips on one end portion of said side plates, and an inclined slideway strip on the other end portion of said plate, a knife bar having inclined ends, and an inclined slat adjacent to one of said inclined ends, said inclined ends being in engagement with the outer inclined slideway strips, while the inclined slat receives the other slideway strip, a lever for raising and lowering the said knife bar, a paper clamp cooperatively arranged with respect to the knife bar, a lever for raising and lowering the clamp, and a common pivot bolt for said levers extending through the side plates.

7. In a paper cutter, a frame comprising a base portion, an integral side plate and a remoxgable side plate, a knife bar on one side plate having a combined vertical and lateral movement, a paper clamp slidably mounted in the other side plate, levers for operating said knife bar and clamp, and a common bolt for said levers, which extends through said side plates, graduated papersupporting bed plates secured to the base portion, a paper guide for either of said bed plates, and means for locking said guide in adjusted positions.

8. In a paper cutter, the combination with frame, a knife slidably mounited therein and a lever for operating said knife, of a paper clamp also slidably mounted in the frame, a lever having a portion for engaging the clamp to raise the same, and a cam portion in said lever for engaging a horizontal portion of the clamp when the lever is lowercd, for forcing the said clamp down.

In testimony whereof I affix my signature in presence of two witnesses.

GEORGE HOMRIG.

Witnesses:

G. SARGENT ELLIOTT, ADA DWELLE. 

